Milking machine releaser.



A. W. REID.

MILKING MACHINE RELEASER.

APPLIOATION rum) APR. 22, 1914.

Patented Dec. 1, 1914,

2 BHEETS-BHEET l.

/l, WADE/D ATTOR/VL'Y THE NORRIS PETERS 130.. PHOTO-LITHCL W'AsHmm'c N.D c

A. W. REID.

MILKING MACHINE RELEASER.

APPLICATION FILED APILZZ, 1914.

1,1 19,536 Patented Dec.1,1914.

2 SHEETS-BEBE! 2.

H0 4 T/ j J 0/ [a Q 7 fi\ K G U H I Z 1 11 gzrzf -HE NORRIS PETERS 60..PHOTO-LITHQ, WASHINGTON, n. c.

UNI TED srrawnutr OFFICE ALEXAND R WALKER REID, ors'rRA'rFoRn, NEWZEALAND.

T 0 all whom it may concern Be it known that I, ALEXANDER W'ALKRR REID,subject ofthe King of Great Britain, residing at Stratford, in theDominion of New Zealand, have inventednew and use ful Improvements inh/Iilking-Machine Re leasers; and I do hereby declare the following tobea full, clear, and exact description of the same.

This invention relates to that class of milking machine releaser for usein receiving the milk from the main milk fiow vacuum pipe in which apair of receiving cans are employed adapted to be alternately and reconstruction of mechanism whereby these changes in the connections ofthe two cans maybe carried out in a simple and effective manner. V Theinvention is illustrated in the accompanying drawings, in which Figure 1is a half front elevation and half sectional elevation of one form ofthe releaser. as constructed according to this invention. Fig. 2 is aplan thereof. Fig. 3 is a detail sectional elevation of the floatcontrolled valve for governing the working of the releaser. Fig. 4c is afront elevation, partly in section, of an alternative construction ofapparatus. Fig. 5 is a planof the same, also partly in section.

The construction employed is adapted to work by direct connection withthe milk flow pipe A as in the form shown in Figs. 1 to 3 or byconnection with a receiver tank or chamber B into which the milk isfirst drawn from the milk flow pipe A, as shown in Figs. i and 5. Ineach construction two cans C and C are employed which in the firstconstruction are connected by inlet branches D and D with the milk mainA and in the second construction with the tank B through passages D andD. The inlet of each passage into the respective cans is closed by meansof :a hinged gravity valve Specification of Letters Patent.

MILKING-MACI-IINE RELEASER.

Patented Dec. 1, 1914.

Application filed. April 22, 1914. Serial No. 833,679.

plate E which normally seals such opening but which is capable ofswinging in with the weight of milk behind it in order to al-, low ofsuch milk passing into the can. Thus when either can is connected withasource of vacuum, while the other is opened to atmospheric pressure, themilk will fiowinto the can for the time being connected with vacuum, inthe one case passing direct from the milk pipe A, and in the other fromthe receiver B. Each can is also provided with a discharge valve F inits bottom that normally keeps closed by its own weight and remainsclosed by the pressure of the atmosphere while the can isunder theinfluence of vacuum and receiving the milk, but

which when the can is connected to atmos-v phere to break down thevacuum, will be swung open by the weight of the milk so as r toallow'the milk to flow out into a suitable receptacle placed .beneath.struction provision is made whereby the cans may in turn be alternatelyconnected with the source of vacuum and with air reversely to oneanother, such change from In each convacuum to air connection in eachcan being caused by the rising of a float contained in the can andlifted by the milk flowing into such can. The means devisedfor thispurpose shown in Figs. 1 to 3 consist of pipe branches GG leading from amain H that is connected with the vacuum source, and into shortcylinders J opening downward into the respective cans G C'. The vacu umtherefore acts through the two branches and through the respective cans.to draw the milk along the milk main A. Each cylinder J is provided witha valve K adapted to be raised and close its bottom end and to jectsthrough the bottom of the valve K and 7 y is formed with a head M thatis adapted to engage the valve. The rod is formed hollow from its bottomend upward and an aperture N is made in its wall near the upper endthereof and opening into the bore,

as shown in Fig. 3. This aperture is so positioned that when the rod israised to, its upward limit, the aperture shall be s tuated above thebranch G or G in order that an air connection through it into the boreand 1

